pypa/pip

Log debug and informational messages to stderr only

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#6,758 opened on 2019年7月21日

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 (22 comments) (0 reactions) (0 assignees)Python (8,952 stars) (3,032 forks)batch import
help wantedstate: awaiting PRtype: enhancement

説明

What's the problem this feature will solve?

Commands that generate output for the user (pip list, pip freeze) must be concerned with debug output.

Describe the solution you'd like

As mentioned in #6099:

  1. all log messages should go to stderr instead of stdout
  2. command API related output should use a dedicated interface that outputs to stdout

Any issue that seeks to make the CLI more usable would benefit from this change. This also avoids issues like #6024.

Alternative Solutions

Originally, ad-hoc redirection of logger output to stderr was used to preserve command output. This could be used again, but it would make logging output from commands inconsistent in pip.

Additional Context

  • #6099

コントリビューターガイド

技術スタック
python
領域
backendcli
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
1-2 days
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
fresh
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
mostly clear
前提条件
Python loggingpip codebase structureCLI output handling
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
30
調査方針
Examine pip's current logging setup in src/pip/ internal/commands/ and src/pip/ internal/utils/logging.py. The issue references #6099 for context. Look at how command output is separated from debug logs. A solution would involve moving all log messages to stderr while keeping command output (like `pip list`) to stdout via a dedicated interface. Review comments for any agreed upon approach.